At New Haven, Conn., Caroline Wozniacki beat American Sloane Stephens 7-6 (6), 6-2 on Thursday, improving her record to 23-1 at the Connecticut Tennis Center, with her lone loss coming a year ago when she had to retire from the semifinals because of a knee injury.

The former No. 1 player in the world will play Simona Halep today. The Romanian beat Russia's Ekaterina Makarova 6-1, 7-6 (6).